Sink bowl construction



March 12, 1940. w. J. wElssERT 2,193,580

SINK BOWL CONSTRUCTION 'Filed Aug. 20, 1938 INVENTOR www .wm

Patented Mar. l2, 1940 PATENT OFFICE SINK BOWL CGNSTRUCTION Walter J. Weissert, Carnegie, Pa., assignor to Tracy Manufacturing Company, a corporation of Pennsylvania Application August 20, 1938, Serial No. 225,919

2 Claims.

This invention relates to an improvement in the drain boards of sinks.

'I'he object of the invention is to improve the attachment of a sink basin in dependent posi- 5 tion with respect to the opening in the body of y the drain board at which the basin is mounted. In the drawing, Fig. I is a plan view of a sink drain board, showing the drain board proper, and a basin mounted thereon; Fig. II is a. bot- 10 tom plan view of the drain board assembly, showing the attachment of the basin to the body of the drain board; Fig. III is a cross-sectional detail view taken on the section line III--III of Fig. I, and showing the basin-attaching means on an enlarged scale; Fig. IV is a cross-sectional detail view, showing in further enlargement one of the elements of the basin-attaching means which are secured directly to the body, or base, of the drain board.

The general assembly herein shown and described is that of United States Patent No. 2,038,638, issued April 28, 1936, to Eugene E. Brey. Iny the general assembly reference numeral I designates the base of the drain board, which preferably is sheet metal, or other relatively rigid material. covered on its upper surface by a facing 2 of linoleum, or other suitable non-metallic material less rigid than the ma.- terial of the drain board base, cemented to the base. 'Ihe non-metallic covering is rabbetted at 3, and a U-shape metallic bar 4 lies in the rabbetting, and embraces both the covering 2 and the base I. This bar is channeled on its under surface, and contains packing 5 against which the flange 6 of the basin 'I lies. Y l

My improvement to the drain board assembly resides in the means for engaging the sink basin in mounted position. Such means comprise bolts 8, so vintegrated with the base l that their shanks project beneath the under surface thereof. As will be seen in Fig. II of the drawing, a row of bolts 8 lies along each side of the basin, in a. position adjacent the edges of the base. In assembly, perforate angle bars 9 are so positioned that the edge of the ange 9a of the bar lies against the under surface of the drain board base, with the body of the angle bar bearing at its edge against the under surface of the basin flange 6. As shown, one of the angle bars is placed along each row of bolts, with the bolt shanks projected through the perforations of the angle bar. Desirably, as shown, a short upturned flange 9b is' formed at the edge of the angle bar body, and makes direct contact with the basin ange. Nuts I run on the Shanks of the bolts projected through the angle bars 9, and may be tightened to cause each of the angle bars to bear vertically against a flange 6 of the basin.

It has been previous practice, as shown and described in the prior patent to which reference 'has been above made, to utilize a plurality of independent clamps to secure the basin in mounted position, each clamp being mounted on a bolt shank, and bearing against the basin flange 10 under the influence of a nut associated with it. Such structure applies relatively great tightening force at the separated points in which the individual clamps lie, and such force tends to crack the enamel on porcelain covered basins. It is undesirable to employ any form of cushioning means between the basin flange and the clamping means in such exposed position, so that preservation of the sink basin requires the use of clamping means of such structure that N clamping pressure may be uniformly distributed,V firmly to engage the sink basin in its mounted position. By using elongate clamping bars, each cooperative with a plurality of bolts and nuts,

and having an extended line of contact with the ff basin flange, it is possible firmly to secure the sink basin in mounted position by exercise of uniformly distributed pressure which is at all points moderate.

In the basin engaging structure it has been found that Vsecuring the clamping bolts to the base of thedrain board by welding, or by counter-sinking a tapered bolt head merely in the thickness of the metal, does not provide security of the highest order. that the heads of the bolts lie upon the upper surface vof the drain board base, with the bolt Shanks extending therethrough. In order both firmly, and otherwise desirably, to secure the bolts with the drain board base, the base is regionally deformed downwardly to provide rows of dependentfrustro-conical nipples I Leach open at its apex. As shown in Fig. IV of the drawing, the head 8a of the bolts 8 lie in these nipples, with the bolt Shanks projected therefrom. If, as is desirable, the-bolt heads and the interior surface of the nipples are correspondingly tapered, the bolts heads t closely in the nipples.

In any case, however, the space surrounding and lying above the head of each bolt is filled with a filling body I2 of a bonding material, such for example as a suitable hard solder, and the upper surface of the filling is smoothed off to the plane of the upper surface of the base. This structure gives a secure integration of the clamp- Nor is it wholly desirable 35 ing bolts with the base of the drain board, Without projection of the bolt heads above the upper' surface of the base.

While the drain board structure is shown, and has been described, as being composite of a sheet metal base and a non-metallic covering therefor, it is to be understood that the basin-engaging means herein shown and described may be applied to uncovered metallic drain boards, or to drain boards of various suitable materials, such as laminated wood, ber board, plastic materials, and the like. If the drain board coaslsts primarily of uncovered sheet metal, it is desirable that the clamping bolts be inserted and soldered in position before the upper surface of the drain board has applied thereto its finishing surfacing of chromium, nickel, or the like. If the drain board base, or the drain board as a Whole, consist of a non-metallic material which may not be deformed to provide the nipples Il, the nipples may be separately formed, either dividually. or in a connected row, as flange kmetallic structures attachable to the drain boardbase to depend from its under surface. It should e`understood that the threaded engagement betwe'en the bolt shanks and nuts, in common manner, is not necessary, as equivalent pressure exerting means may be associated with bolts the Shanks of which are unthreaded. Y

In describing the advantages of a clamping bar as compared with individual clamps, the avoidance of cracking the enamel from a' porcelain enameled basin has been considered. The same problem exists also if the basin be formed of some molded plastic material, or formed as a whole of glass or other vitreous substance, or composition.

I claim as my invention:

1. In a drain board assembly for sinks thel combination of a drain board having a basin opening therein, a flanged basin having its flanges positioned at the under surface of the drain board surrounding the basin opening, elongate metallic clamping bars angular in crosssection and perforate for the passage of bolts bearing each at one terminal edge against the under surface of the drain board and at its other terminal edge against the basin flange, and bolts -projected from the under surface of the drain WALTER J. WEISSEIECI. 

